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Vulnerability · Published Jan 22, 2026 · Assigned by VulnCheck

CVE-2026-23764VB-Audio Voicemeeter & Matrix Drivers DoS via Corrupted IoAllocateMdl Length

Medium 6.8

In plain English

A medium-severity security flaw in Matrix from VB-Audio Software. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).

Severity (CVSS 4.0)6.8Medium
Exploit odds (30 days)0.2%top 95.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

VB-Audio Voicemeeter, Voicemeeter Banana, and Voicemeeter Potato (versions ending in 1.1.1.9, 2.1.1.9, and 3.1.1.9 and earlier, respectively), as well as VB-Audio Matrix and Matrix Coconut (versions ending in 1.0.2.2 and 2.0.2.2 and earlier, respectively), contain a vulnerability in their virtual audio drivers (vbvoicemeetervaio64*.sys, vbmatrixvaio64*.sys, vbaudio_vmauxvaio*.sys, vbaudio_vmvaio*.sys, and vbaudio_vmvaio3*.sys). The drivers allocate non-paged pool and map it into user space, where a length value associated with the allocation is exposed and can be modified by an unprivileged local attacker. On subsequent IOCTL handling, the corrupted length is used directly as the IoAllocateMdl length argument without adequate integrity checks before building and mapping the MDL, which can cause a kernel crash (BSoD), typically PAGE_FAULT_IN_NONPAGED_AREA. This flaw allows a local user to trigger a denial-of-service on affected Windows systems.

Affected products (as reported)

VendorProductVersions
VB-Audio Software Voicemeeter (Standard) 0 – through 1.1.1.9
VB-Audio Software Voicemeeter Banana 0 – through 2.1.1.9
VB-Audio Software Voicemeeter Potato 0 – through 3.1.1.9
VB-Audio Software Matrix 0 – through 1.0.2.2
VB-Audio Software Matrix Coconut 0 – through 2.0.2.2

Weakness: CWE-823 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

References